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03.05.2021 •
Mathematics
Which of the following numerical data sets has a mean of 40?
A. 18, 82
B. 21, 34, 65
C. 38, 39, 40, 41
D. 20, 30, 40, 55
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Ответ:
z-score = 0.741
Step-by-step explanation:
The provided information are:
Population mean
= 103
Population standard deviation
= 2.7
Score (X) = 105
The formula to calculate the z-score is:
The z- score can be calculated as:
Hence, the z-score is 0.741.